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From: Cunming Liang <cunming.liang@intel.com>
To: dev@dpdk.org, shemming@brocade.com
Date: Mon, 8 Jun 2015 13:28:58 +0800
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Cc: liang-min.wang@intel.com
Subject: [dpdk-dev] [PATCH v12 01/14] eal/linux: add interrupt vectors
support in intr_handle
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The patch adds interrupt vectors support in rte_intr_handle.
'vec_en' is set when interrupt vectors are detected and associated event fds are set.
Those event fds are stored in efds[].
'intr_vec' is reserved for device driver to initialize the vector mapping table.
When the event fds add to a specified epoll instance, 'eptrs' will hold the rte_epoll_event object pointer.
Signed-off-by: Danny Zhou <danny.zhou@intel.com>
Signed-off-by: Cunming Liang <cunming.liang@intel.com>
---
v7 changes:
- add eptrs[], it's used to store the register rte_epoll_event instances.
- add vec_en, to log the vector capability status.
v6 changes:
- add mapping table between irq vector number and queue id.
v5 changes:
- Create this new patch file for changed struct rte_intr_handle that
other patches depend on, to avoid breaking git bisect.
lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
index bdeb3fc..9c86a15 100644
--- a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
+++ b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
@@ -38,6 +38,8 @@
#ifndef _RTE_LINUXAPP_INTERRUPTS_H_
#define _RTE_LINUXAPP_INTERRUPTS_H_
+#define RTE_MAX_RXTX_INTR_VEC_ID 32
+
enum rte_intr_handle_type {
RTE_INTR_HANDLE_UNKNOWN = 0,
RTE_INTR_HANDLE_UIO, /**< uio device handle */
@@ -49,6 +51,8 @@ enum rte_intr_handle_type {
RTE_INTR_HANDLE_MAX
};
+struct rte_epoll_event;
+
/** Handle for interrupts. */
struct rte_intr_handle {
union {
@@ -58,6 +62,12 @@ struct rte_intr_handle {
};
int fd; /**< interrupt event file descriptor */
enum rte_intr_handle_type type; /**< handle type */
+ uint32_t max_intr; /**< max interrupt requested */
+ uint32_t nb_efd; /**< number of available efds */
+ int efds[RTE_MAX_RXTX_INTR_VEC_ID]; /**< intr vectors/efds mapping */
+ struct rte_epoll_event *elist[RTE_MAX_RXTX_INTR_VEC_ID];
+ /**< intr vector epoll event ptr */
+ int *intr_vec; /**< intr vector number array */
};
#endif /* _RTE_LINUXAPP_INTERRUPTS_H_ */
--
1.8.1.4